Japan's main islands of Honshu, Kyushu and Hokkaido are served by a network of high speed train lines that connect Tokyo with most of the country's major cities. Japan's high speed trains (bullet trains) are called shinkansen ( V ) and are operated by Japan Railways (JR).What is the JR rail line in Japan?
The Yamanote Line is run by East Japan Railway Company (JR East). The JR Yamanote Line carries millions of passengers everyday and is famous for its packed trains in the Tokyo rush hours. The Japan Rail Pass is valid for journeys on the JR Yamanote Line.What is Jr Tokyo?
JR stands for Japan Railways. There are several branches of the Japan Railways Group depending on the location–for instance, Japan Railways East (JR East) covers Tohoku and Kanto, where Tokyo is. Likewise, JR West does Kansai and JR Kyushu does Kyushu.